EP 0544491 A3 19930929 - SYNTHESIS OF MANGANESE OXIDATION CATALYST
Title (en)
SYNTHESIS OF MANGANESE OXIDATION CATALYST
Publication
Application
Priority
US 79847791 A 19911126
Abstract (en)
[origin: CA2083660A1] C6153 (L) A process is described for the preparation of a manganese complex catalyst having the formula: wherein Mn is manganese in a III or IV oxidation state; X is independently a coordinating or bridging species selected from the group: H2O, O22-, O2-, OH-, HO2-, SH-, S2, >SO, C1-, N3-, SCN-, N3-, RSO3-, NH2-, NR3 and RCOO-; R is a radical selected from the group H, alkyl aryl radicals, optionally substituted; and R1COO- is an alkyl or aryl radical, optionally substituted. L is an organic ligand containing at least two nitrogen atoms that coordinate with the Mn; z is an integer ranging from -4 to +4; Y is a monovalent or multivalent counterion leading to charge neutrality; and q is an integer from 1 to 4; the process comprising the steps of: (i) reacting, in an aqueous medium, a manganese (II) salt with the ligand L to form a manganese coordinated substance, a counterion salt M2Yq being present wherein M is selected from the group consisting of metals, ammonium and alkanolammonium ions; (ii) oxidising the manganese coordinated substance of step (i) with an oxidising agent; (iii) basifying a reaction mixture containing the oxidised manganese coordinated substance formed in step (ii) to a pH of at least 10.5; and C6153 (L) (iv) contacting the basified reaction mixture with a further oxidising agent to form the manganese complex catalyst.
IPC 1-7
IPC 8 full level
B01J 31/16 (2006.01); B01J 31/18 (2006.01); B01J 31/22 (2006.01); C11D 3/395 (2006.01); C11D 7/54 (2006.01); D06L 3/02 (2006.01)
CPC (source: EP US)
B01J 31/1805 (2013.01 - EP US); B01J 31/182 (2013.01 - EP US); B01J 31/2226 (2013.01 - EP US); B01J 2231/70 (2013.01 - EP US); B01J 2531/0216 (2013.01 - EP US); B01J 2531/0258 (2013.01 - EP US); B01J 2531/72 (2013.01 - EP US)
Citation (search report)
- [XE] EP 0522817 A1 19930113 - UNILEVER PLC [GB], et al
- [XP] EP 0458397 B1 19970326 - UNILEVER NV [NL], et al
- [AP] EP 0466341 A1 19920115 - EXXON RESEARCH ENGINEERING CO [US]
- [A] FR 2303785 A1 19761008 - RHONE POULENC IND [FR]
- [XD] J. AM. CHEM. SOC. 1988, K. WEIGHARDT 'SYNTHESIS,CRYSTAL STRUCTURE,REACTIVITY,AND MAGMETOCHEMISTRY OF A SERIES OF BINUCLEAR COMPLEXES OF MANGANESE'
Designated contracting state (EPC)
CH DE ES FR GB IT LI NL SE
DOCDB simple family (publication)
US 5153161 A 19921006; BR 9204537 A 19930601; CA 2083660 A1 19930527; EP 0544491 A2 19930602; EP 0544491 A3 19930929; JP H078801 A 19950113; ZA 929141 B 19940525
DOCDB simple family (application)
US 79847791 A 19911126; BR 9204537 A 19921125; CA 2083660 A 19921124; EP 92310720 A 19921124; JP 31699192 A 19921126; ZA 929141 A 19921125